package thread;

public class SyncDemo3 {
    public static void main(String[] args) {
        Foo f1 = new Foo();
        Foo f2 = new Foo();
        Thread t1= new Thread(){
            public void run(){
                f1.dosome();
            }
        };
        Thread t2 = new Thread(){
            public void run(){
                    f2.dosome();
                }
        };
        t1.start();
        t2.start();
    }
}

class Foo{
//    public synchronized static void dosome(){
    public static void dosome(){
        synchronized (Foo.class){
            Thread t = Thread.currentThread();
            System.out.println(t.getName()+":正在执行dosome方法");
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(t.getName()+":执行dosome方法完毕");
        }
    }
}

